Anyone else having trouble inputting shift codes?

I was trying to enter the shift code for the recent giveaway thingy but it keep telling me it was the wrong one. After about 7-8 attempts (and numerous checks that I had the number right) it got through. The same thing happened when I was trying to enter the firstborn code. Is the shift code thing broken?

They take several tried to work sometimes. Shift is just a little finicky.

Yeah, takes a few tries.